Analog circuit means for analog signal transmission, conversion, processing, amplification, measuring circuit and the display. Refers to the analog electrical signal is continuously changed. Analog circuit is the basis of an electronic circuit, which includes an amplifier circuit, and the arithmetic signal processing circuit, an oscillation circuit, a modulation and demodulation circuit and power supply.
Almost all of the physical nature in time and intensity has "continuous" nature, are all analog; physical quantity to be processed prior to digital processing, the need for amplification, pre-filtering, sampling and discrete processing, the analog signal digital; through digital signal digital processing needs to be restored into an analog signal and after further enlarged in order to become capable of being accepted by people form; processing speed, high-frequency signal (an optical signal, radio frequency signals, etc.), the difficulty of digitized electrode large, still need treatment (low noise amplification, analog filtering, etc.) the analog signals; a high operating frequency of digital circuit design, as in analog circuits must consider the impact of distributed parameter circuit, design method and design principles of the analog circuit consistent design; system (SOC) on the mixed-sheet of large numbers;
digital / analog (D / a) converter
action digital / analog converter (digital-to-analog converter) is to convert digital to analog .
Substantially monolithic integrated circuit suitable for D / A conversion circuit, which according to
the working principle can be divided into three categories:
current scaling circuit
voltage scaling circuit
charge scaling circuit
current scaling is a bipolar D / A converter design the most common, and the charge voltage scaling D / a converter circuit is particularly suitable for MOS circuits.
QY-JXSY49 analog test box test circuit design using the circuit system unit, the circuit unit i.e. the basic experimental circuit for the circuit parameters and then add other components, or other circuit means in combination with, perform different experiments.
Experimental Item
1. Single-stage amplifying circuit
2. The two amplifying circuit
3. The negative feedback circuit
4. The emitter follower
5. The differential amplifying circuit
6. The ratio of the summation circuit
7. The differential and integral circuit
8. The waveform generation circuit
9. The active filter
10. The voltage comparator
11.IC sinusoidal oscillator circuit RC
12. the integrated power amplifier
13. the rectifying and filtering circuit with a shunt regulator
14. the series regulator circuit
15. the voltage regulator integrated
16.RC sine wave oscillator
17.LC selected frequency oscillator and amplifier
18. the current / voltage conversion circuit
19 voltage / frequency conversion circuit
20. The complementary symmetry power amplifier
21. The waveform conversion circuit
22. The FET experiment
23. experiment SCR circuit
additionally: extension region breadboard
